homograph

a word of the same written form as another but of different meaning and usually origin, whether pronounced the same way or not, as bear1 “to carry; support” and bear2 “animal” or lead1 “to conduct” and lead2 “metal.”

Word Origin and History for homograph

n.

1810, a method of signaling, from homo- (1) "same" + -graph "something written." Meaning "a word of identical spelling with another, but of different origin and meaning, is from 1873. Related: Homographic; homography.